From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Elisp and overlay, how to show an image Date: Mon, 08 Jul 2024 02:20:09 +0200 Message-ID: <87cynobupy.fsf@web.de> References: <8734omfcnc.fsf@k-7.ch> <87plrpdxry.fsf@k-7.ch> Reply-To: Michael Heerdegen Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24625"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:zxivUpCaPg8NPaMwPHp9QJbVT+k= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 08 02:20:19 2024 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sQc77-0006CS-Tx for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 08 Jul 2024 02:20:17 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sQc6O-0006gf-H9; Sun, 07 Jul 2024 20:19:32 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sQc6M-0006gT-A7 for help-gnu-emacs@gnu.org; Sun, 07 Jul 2024 20:19:30 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sQc6K-0002B7-Mj for help-gnu-emacs@gnu.org; Sun, 07 Jul 2024 20:19:29 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1sQc6G-00053S-T8 for help-gnu-emacs@gnu.org; Mon, 08 Jul 2024 02:19:24 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:147114 Archived-At: Sébastien Gendre writes: > Is there a way to set a bottom margin to the added overlay, or to the > image, like with CSS on a web page ? Or do I need to add more "\n" with > (overlay-put) ? > > I need to found a way to modify the way the image is shown. Controlling > the zoom, on which part it's centered and how the image is cut. I will > read more carefully the section "41.17 Images" of the elisp manual. > Until now, I was started by the overlays section of the manual. Have a look at (info "(elisp) Image Descriptors") - in particular, :scale, :ascent, :margin. AFAIU you are allowed to manipulate the data structure of an already created image "object". But note that not every image type supports or implements all descriptors. Michael.